FAQs
Here you’ll find a wide range of popular questions, trouble-shooting guides, video tutorials and more.
- Can I buy photoelectric sensors that can be used in water?
- How do the indicators on a photoelectric sensor operate?
- How is the UL standard of the sensor of the DC power system treated?
- Is a serial connection possible in a photoelectric sensor?
- Is there a problem when light from two photoelectric sensors crosses?
- To use the light of a photoelectric sensor through a hole, how large should the hole be?
- Our photoelectric sensors malfunction when the power supply of an inverter motor or other equipment is switched on or off. What's causing this and what can we do to resolve it?
- We detect shiny objects using retroreflective sensors with mirror surface rejection but malfunctions happen. Why is this and how can it be solved?
- What are the differences between Omron E39-R1 general-purpose reflectors and E39-R1K ones?
- What are the differences between Omron E39-R1 and E39-R1S reflectors?
- Can I use a slit and a mutual interference protection filter with E3S-AT through-beam sensors?
- Can I use a photoelectric sensor with an optical fibre in an explosion-proof area?
- Can I buy heat-resistant photoelectric sensors?
- Can I use alcohol to wipe off dirt from the lens surface of photoelectric sensors?
- Can I use a photoelectric sensor outdoors?
- Can other reflectors be used with retroreflective photoelectric sensors instead of the ones supplied?
- Is there a problem when light from two photoelectric sensors crosses?
- My reflector's fogged up, how can I fix it?
- What does reversing the polarity of power supply do to a sensor?
- What does the slit in through-beam photoelectric sensors do and how is it used?
- What happens when direct sunlight hits the lens of a receiver?
- What can I adjust in the sensitivity setting of a photoelectric sensor?
- What is a photoelectric sensor?
- What is the allowable bending radius of coaxial or shielded cables for photoelectric and proximity sensors?
- What is mirror surface rejection of a retroreflective sensor?
- What is the difference in output between an NPN and a PNP transistor?
- What is the difference between a reflective fibre unit and a coaxial reflective one?
- What is the repeat accuracy for photoelectric sensors?
- What is wavelength of light?
- When using a fibre unit mounted to a movable part, are there models that are less affected by repetitive bending?